Opera rivalry: Maria Callas and Renata Tebaldi

19. Opera rivalry: Maria Callas and Renata Tebaldi

The two superstar singers were embroiled in rivalry in the 1950s. Tebaldi once said: “I have one thing that Callas doesn't have: a heart”, and Callas said that comparing her with Tebaldi was like “comparing Champagne with Cognac”. Meow.